The realizations of local supersymmetry (Q1107197)

We show that the realizations of local supersymmetry in the full superspace reduce to realizations in the Wess-Zumino gauge in a manifestly covariant way. The natural frame of this covariant Wess-Zumino gauge is the one of the new theta variables of Wess and Zumino. With this formalism we compute the invariant densities of the chiral superspace in a geometrical way. We show also how to compute the transformation law of the nonlinear realizations of local supersymmetry from the transformation law of the new superspace.